Ergotron LX - Mounting kit (tall pole, dual stacking arm) - for 2 LCD displays - matte black - screen size: up to 40" - desk-mountable : Amazon.co.uk: Electronics & Photo
45-360-026 Ergotron LX Series 45-360-026. Maximum weight capacity: 11300 kg, Minimum VESA mount: 75 x 75 mm, Maximum VESA mount:
Ergotron - LX Desk Monitor Arm in Black, Monitor Mount with patented Constant Force Technology, for displays up to 34", 3.2-11.3 kg with VESA-Standard : Amazon.co.uk: Electronics & Photo
Ergotron 45-243-224 LX Wall Mount LCD Monitor Arm - Black - for Screens up to 34"